: 96 sts check engine light on but no codes

04-14-07, 06:59 PM
Yep kind of funny check engine is on, but when i check for any codes all are in history. any ideas. reset computer, clear history? If so how can i clear all history codes.

04-14-07, 08:44 PM
One of the history code was set in the last 3 ignition cycles and it is likely an emission related code that turned on the light. The light will go out after 3 ignition cycles if the fault is not detected again. Clearing the codes will also clear the historical codes.

04-15-07, 02:52 AM
Ranger is exactly right. Clear the codes and see which come back.

By the time you stop the car and check the codes it goes into history.

04-15-07, 06:40 AM
The Sticky at the the top has the link if you want to Clear Codes. Or you can run the Codes before you shut it off.